# Scheduled Network Maintenance: Switch Firmware Update (Multiple Availability Zones)

- Provider: [CoreWeave](https://down.guide/coreweave)
- Level: confirmed
- Impact: Maintenance
- lasted 0m
- started 2026-10-26 16:51 UTC
- us
- id: DWN-e641b80ddc
- Official page: https://status.io/pages/maintenance/5e126e998f2f032e1f8f0f4b/6ace9aca448794056d0c4235

## Updates from CoreWeave
### 2026-10-26 16:51 UTC: resolved
October 13, 2026 8:55PM UTC 
 Scheduled - Details: CoreWeave will be performing network maintenance from Monday, October 19, 2026 at 12:00 UTC to Friday, October 23, 2026 at 00:00 UTC. Work runs during daytime hours each day in the window, 12:00 UTC to 00:00 UTC. We are applying a vendor-recommended firmware update to the boot drives of network switches in the following availability zones:
US-CENTRAL-09A, US-CENTRAL-08A, US-EAST-04B, US-CENTRAL-10A, US-EAST-12A, US-CENTRAL-08B
This update resolves a known issue that can cause a switch to become unresponsive, and it improves overall network reliability.
Impact: No impact is expected. The update is applied live, without switch reboots or node drains, and running workloads can continue without interruption. In rare cases, a switch may need a brief restart after the update. Where this affects backend (GPU-to-GPU) network switches, a small number of nodes may temporarily lose part of their backend network bandwidth until the restart completes, which may affect multi-node jobs running on those nodes. Engineers and on-site technicians will be monitoring throughout the window, and affected customers will be contacted directly. No customer action is required.
 October 19, 2026 4:21AM UTC 
 Active - Scheduled maintenance
 October 22, 2026 10:48PM UTC 
 Active - This maintenance has been extended through Friday, October 23. 
 October 26, 2026 4:51PM UTC 
 Completed - Maintenance is done

---
down.guide reads providers' official status pages every minute and adds its own evidence, always labeled. Free, no account. Agents: MCP at https://down.guide/mcp, REST at https://down.guide/api/v1, feeds at https://down.guide/feed. Built by Sazabi (https://sazabi.com/?utm_source=down-guide&utm_medium=markdown).